The Sleeve,shaft,pump, cataloged under National Stock Number 4320-01-196-7434, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-196-7434 |
| Primary Part Number | S420W |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S420W PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S-420W/0461 | 5/9 Secondary reference Circor Pumps North America Llc |
| SG-4461 PIECE 27 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG-4461 PIECE 27 | 5/9 Secondary reference Circor Pumps North America Llc |
| SG-4461 | D/9 Drawing number reference only Siemens Energy, Inc. |
| S-420W/0461 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4320-01-196-7434 is a Sleeve,shaft,pump, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-196-7434 has 1 manufacturer part number on file: S420W (Circor Pumps North America Llc).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-198-0745. Verify interchangeability with system specifications before substitution.
Key specifications for S420W: End Item Identification: TRANSAMERICA DELAVAL CORP INC IMO PUMP TYPE 3KBX-800J; Material: STEEL OVERALL. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.